<template>
  <div>
    <el-upload
      class="avatar-uploader"
      :action="action"
      :show-file-list="false"
      :on-success="handleAvatarSuccess"
      :before-upload="beforeAvatarUpload"
    >
      <img v-if="value" :src="value" class="avatar">
      <i v-else class="el-icon-plus avatar-uploader-icon" />
    </el-upload>
  </div>
</template>

<script>
export default {
  props: {
    value: {
      type: String,
      default: ''
    }
  },
  data() {
    return {
      action: process.env.VUE_APP_BASE_API + '/tool/upload'
    }
  },
  methods: {
    handleAvatarSuccess(res) {
      this.$emit('input', res.data[0])
      // this.value = res.data.path
    },
    beforeAvatarUpload(file) {
      const isIMG = ['image/jpeg', 'image/jpg', 'image/png', 'image/gif'].includes(file.type)
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isIMG) {
        this.$message.error('上传图片只能是格式不正确!')
      }
      if (!isLt2M) {
        this.$message.error('图片大小不能超过 2MB!')
      }
      return isIMG && isLt2M
    }
  }
}
</script>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>
